Alt's Seamless Spouting installed a new gutter guard material for me a couple years back, and I had issues with it from the beginning (with pine needles and other various issues). I called them and they explained that they were no longer dealing with the company who dealt the faulty material. They came to reinstall a new material free of charge even though it had been well over a year since the last installation. They had done this for a few of their other customers as well, so I was thrilled.